ES294099A1 - Electronic tap changing transformer systems - Google Patents

Electronic tap changing transformer systems

Info

Publication number
ES294099A1
ES294099A1 ES0294099A ES294099A ES294099A1 ES 294099 A1 ES294099 A1 ES 294099A1 ES 0294099 A ES0294099 A ES 0294099A ES 294099 A ES294099 A ES 294099A ES 294099 A1 ES294099 A1 ES 294099A1
Authority
ES
Spain
Prior art keywords
thyristors
load
tap
firing
reversed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES0294099A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent SAS
Original Assignee
Compagnie Generale dElectricite SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie Generale dElectricite SA filed Critical Compagnie Generale dElectricite SA
Publication of ES294099A1 publication Critical patent/ES294099A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
    • G05F1/14—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices
    • G05F1/16—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices combined with discharge tubes or semiconductor devices
    • G05F1/20—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices combined with discharge tubes or semiconductor devices semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/083—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the ignition at the zero crossing of the voltage or the current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/25—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/257—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M5/2573—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Electrical Variables (AREA)
  • Inverter Devices (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

An on load switching device such as to effect the transfer of load from one tap to another on a transformer comprises a switching impedance connected to each tap arranged so that the impedances are switched to the reversed state simultaneously by a pulse from a device for detecting the zero point of the load current. In Fig. 1, one tap 5 may be connected to a load 13 through reverse parallel connected thyristors 10, 11. From a voltage detecting circuit, a contact 18 is closed when the voltage is to be raised hence passing a signal from a zero current detector 12 to a bi-stable circuit 15, changing over its state so that output voltages at terminals 33, 34 are reversed thus extinguishing thyristors 10, 11 through control voltage generators 20, and firing thyristors 8, 9. To prevent the thyristors 8, 11 or 9, 10 firing simultaneously and causing a short circuit the terminal voltages 33, 34 are fed through delay circuits 23, 24 having different time delays in the rise and fall direction so that one thyristor will block before the other fires.
ES0294099A 1963-09-06 1963-12-02 Electronic tap changing transformer systems Expired ES294099A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR946832A FR1382152A (en) 1963-09-06 1963-09-06 Improvements to on-load switching devices

Publications (1)

Publication Number Publication Date
ES294099A1 true ES294099A1 (en) 1964-03-01

Family

ID=8811919

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0294099A Expired ES294099A1 (en) 1963-09-06 1963-12-02 Electronic tap changing transformer systems

Country Status (6)

Country Link
US (1) US3340462A (en)
DE (1) DE1413478B2 (en)
ES (1) ES294099A1 (en)
FR (1) FR1382152A (en)
GB (1) GB1060638A (en)
NL (1) NL300870A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1130636A (en) * 1966-02-18 1968-10-16 Westinghouse Brake & Signal Improvements relating to voltage regulating circuits
DE1538030B1 (en) * 1966-03-05 1970-06-04 Reinhausen Maschf Scheubeck Arrangement and procedure for load switching in step transformers
DE1563280B2 (en) * 1966-04-16 1971-04-01 Maschinenfabrik Reinhausen Gebruder Scheu beck KG, 8400 Regensburg ARRANGEMENT FOR CHANGING THE LOAD IN STEPPED TRANSFORMERS WITH ANTI-PARALLELLY SWITCHED THYRISTORS
FR1514361A (en) * 1967-01-12 1968-02-23 Comp Generale Electricite Device for switching from one outlet to another of a multi-tap winding of a transformer
US3495129A (en) * 1967-11-16 1970-02-10 United Aircraft Corp Inverter protection scheme
DE1638480C2 (en) * 1967-12-06 1974-07-18 Maschinenfabrik Reinhausen Gebrueder Scheubeck Kg, 8400 Regensburg Arrangement for load switching with a three-phase step transformer
US3491370A (en) * 1968-01-04 1970-01-20 United Aircraft Corp Inverter protection scheme
US3531713A (en) * 1968-12-16 1970-09-29 Gen Electric Non-arcing tap changing system
US3723853A (en) * 1970-01-13 1973-03-27 Mo Energet Ins Scr tap changing voltage regulator
US3619765A (en) * 1970-06-24 1971-11-09 Westinghouse Electric Corp Electrical control apparatus using direction of current and power flow to gate switching devices
AU2003902058A0 (en) 2003-04-30 2003-05-15 Golias, Matthew Collapsible supporting structure
CN106898480B (en) * 2015-12-21 2019-06-21 中国电力科学研究院 A kind of thyristor auxiliary hybrid load ratio bridging switch of blow-out

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA656748A (en) * 1958-07-14 1963-01-29 Westinghouse Electric Corporation Electrical voltage control apparatus
US2959726A (en) * 1958-10-08 1960-11-08 Honeywell Regulator Co Semiconductor apparatus
US3204113A (en) * 1960-11-29 1965-08-31 Honeywell Inc Control apparatus employing a semiconductor device connected in inverse parallel
US3174096A (en) * 1961-06-23 1965-03-16 Ampex D. c. voltage regulating circuit
US3263157A (en) * 1962-04-17 1966-07-26 Acme Electric Corp Regulator circuit
US3195036A (en) * 1962-12-21 1965-07-13 Ibm Regulated power supply

Also Published As

Publication number Publication date
GB1060638A (en) 1967-03-08
NL300870A (en) 1900-01-01
FR1382152A (en) 1964-12-18
DE1413478B2 (en) 1970-10-15
DE1413478A1 (en) 1969-10-02
US3340462A (en) 1967-09-05

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